1. Ultrasound and Wave Properties – Analyzing how changes in wavelength and pulse length affect the resolution of medical imaging. 2. Photoelectric Effect and Quantum Mechanics – Evaluating the role of photon energy in the emission of electrons from a metal surface. 3. Nuclear Fusion in Stars – Explaining the physical conditions required to sustain nuclear fusion in stellar cores. 4. Terminal Velocity in Fluids – Determining the viscosity of an oil sample by analyzing the motion of steel spheres. 5. Gravitational Fields and Orbital Mechanics – Calculating the orbital period of a star around a supermassive black hole. 6. Optics and Focusing in Marine Life – Investigating how changes in refractive index affect the focusing ability of an octopus’ eye.